usb: xhci: xhci-plat: Add support for BCM2711

With the introduction of a BCM2711 specific compatible, this also
needs to be added to the xHCI driver.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20231205200531.8232-3-wahrenst@gmx.net


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>